EP 0143933 B1 19870121 - METHOD FOR THE PREPARATION OF BASIC COPPER PHOSPHATE WITH A CLEAR INHERENT COLOUR AND WITH AN AVERAGE GRAIN SIZE SMALLER THAN 10 UM
Title (en)
METHOD FOR THE PREPARATION OF BASIC COPPER PHOSPHATE WITH A CLEAR INHERENT COLOUR AND WITH AN AVERAGE GRAIN SIZE SMALLER THAN 10 UM
Publication
Application
Priority
DE 3342292 A 19831123
Abstract (en)
[origin: US4567220A] A process for producing a copper(II) hydroxide phosphate having the Cu3(PO4)2.Cu(OH)2 composition and having a light natural color and an average grain size less than 10 microns. Basic copper carbonate of a bulk density less than 800 grams per liter is treated in an aqueous dispersion with phosphoric acid at temperatures less than 70 DEG C. and the reaction mixture is then mechanically agitated further within the same temperature range. The copper phosphate so obtained is applicable as a smoke-reducing additive in polyvinyl or molding materials containing the same.
IPC 1-7
IPC 8 full level
C08K 3/00 (2006.01); C01B 25/37 (2006.01); C08K 3/28 (2006.01); C08K 3/32 (2006.01); C08L 1/00 (2006.01); C08L 27/00 (2006.01); C08L 27/06 (2006.01)
CPC (source: EP US)
C01B 25/37 (2013.01 - EP US); C08K 3/32 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI NL
DOCDB simple family (publication)
EP 0143933 A1 19850612; EP 0143933 B1 19870121; AT E25067 T1 19870215; BR 8405945 A 19850917; DE 3342292 A1 19850530; DE 3462122 D1 19870226; JP S60131815 A 19850713; US 4567220 A 19860128
DOCDB simple family (application)
EP 84111457 A 19840926; AT 84111457 T 19840926; BR 8405945 A 19841122; DE 3342292 A 19831123; DE 3462122 T 19840926; JP 24356984 A 19841120; US 66483884 A 19841025